1.

Triangle Symbol -
This is actually the plastic bottle character index. This sign indicates that the bottle is statutory. But, how reliable or what kind of things can be used in the bottle, can be understood by the number in the triangle.

2.

If there is 1 number in the triangle -
this means that the bottle can be used only once and the polythene terrestle plastic used in the bottle. This type of bottle is harmful to the health of multilayers.

3.

If there are 2 numbers in the triangle - such plastic bottles have been used in dense polythene. Basically these bottles are used for keeping shampoo or detergent.

4.

If there are 3 numbers in the triangle - such bottles should not be used more. Because this bottle is made from 'Polivinol chloride' or 'PVC'. There is a risk of cancer. This bottle is used to keep 'peanut butter'.

5.

If there are 4 numbers in the triangle - such a plastic is useful for many uses. In particular, lots of these symbols are seen in plastic packets. This sign is very expensive bottle.

6.

If there are 5 numbers in the triangle - such a plastic is absolutely safe and usable. These types of signs are seen in the icme cups or syrup bottles or food containers.

7.

If there are 6 or 7 numbers in the triangle - plastic red card is called a. These types of plastic are seriously harmful. Because these types of plastic are made in polystyrene and polycarbonate Bisphenol. It creates hormonal problems in humans. Continuous use of such plastic enhances the tendency of cancer.